Set of 4 wheels and soft tyres with foam inserts and glued ready to be installed on your 1.10 car. When running the spinners will run free creating an awesome visual effect. No battery required. Simply runs on a bearing. When the model is not moving these spinners will stop shortly after stopping. Free tyre holder included. To suit 1.10 scale models however will not fit all. Please check measurements before purchasing. 65.50mm outer Diameter. 44.86mm inner diameter. 12mm hex. 25mm wide. 14mm depth to hex.